Replacement screen door mesh is also available in plastic, IINM.
I think it would be better to have the [A] polyfill for general TQWT, including Sibelius.
I don't use [A] because I make the opening into a duct shape and apply a mass loaded.
so it would be smart to glue a mesh mat into the Sibelius pipe, so that damping material can be added later if necessary?
nice router. what make is it?
how do you adjust the radius accurately, repeatably and securely?
how do you adjust the radius accurately, repeatably and securely?
Re damping: How much and where it goes is heavily dependent on room, taste, and in the case of the “sibelius” clone, how badly marched the driver is to the line.
Functionality of damping materials vary greatly, some polyfluffs are not great, things like acustastuff are really decent and consistent.
At either end of scale we have a BIB which needs a lot and very carefully placed damping, to a Metronime which often want VERY little.
Add to that, the polyfluff needs proper teasing. More often than not i see big wads of insufficiently teased polyfluff.
There is too much variability in the damping to be ableto specify much.
Denoding on the damping used, some supports so that it does not sag. particularily true if you use sheepswool. Well teased acouistastuff statys preety much where you put it. A mix of some acoustasuff withthe sheep’s wool tends to stay in place.
dave
Functionality of damping materials vary greatly, some polyfluffs are not great, things like acustastuff are really decent and consistent.
At either end of scale we have a BIB which needs a lot and very carefully placed damping, to a Metronime which often want VERY little.
Add to that, the polyfluff needs proper teasing. More often than not i see big wads of insufficiently teased polyfluff.
There is too much variability in the damping to be ableto specify much.
Denoding on the damping used, some supports so that it does not sag. particularily true if you use sheepswool. Well teased acouistastuff statys preety much where you put it. A mix of some acoustasuff withthe sheep’s wool tends to stay in place.
dave
Yes, I build and test them.
For the DDVP series, I adjust the position and amount of sound-absorbing material installed to my liking.
Each user has a different taste in sound, so the use of sound-absorbing materials is different for each person.
Damping is a compromise between letting as much fundemental out the terminus, while still suppressing the unwanted ripple (higher harmonics).Too little damping then too much bass too much ripple.
dave
I wish you all the best with your self built Sibelius. I am ready and very happy with them. Thanks for joining and your comments. Kind regards from The Netherlands, Brielle. ;-)